diff --git a/index.d.ts b/index.d.ts
index 9ccc725..455ba9a 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -261,8 +261,17 @@ declare namespace chalk {
 		readonly magenta: Chalk;
 		readonly cyan: Chalk;
 		readonly white: Chalk;
+
+		/*
+		Alias for `blackBright`.
+		*/
 		readonly gray: Chalk;
+
+		/*
+		Alias for `blackBright`.
+		*/
 		readonly grey: Chalk;
+
 		readonly blackBright: Chalk;
 		readonly redBright: Chalk;
 		readonly greenBright: Chalk;
@@ -280,6 +289,17 @@ declare namespace chalk {
 		readonly bgMagenta: Chalk;
 		readonly bgCyan: Chalk;
 		readonly bgWhite: Chalk;
+
+		/*
+		Alias for `bgBlackBright`.
+		*/
+		readonly bgGray: Chalk;
+
+		/*
+		Alias for `bgBlackBright`.
+		*/
+		readonly bgGrey: Chalk;
+
 		readonly bgBlackBright: Chalk;
 		readonly bgRedBright: Chalk;
 		readonly bgGreenBright: Chalk;
diff --git a/package.json b/package.json
index 764bcbf..b6cbdd4 100644
--- a/package.json
+++ b/package.json
@@ -40,18 +40,18 @@
 		"text"
 	],
 	"dependencies": {
-		"ansi-styles": "^3.2.1",
-		"supports-color": "^6.1.0"
+		"ansi-styles": "^4.0.0",
+		"supports-color": "^7.0.0"
 	},
 	"devDependencies": {
-		"ava": "^1.4.1",
-		"coveralls": "^3.0.3",
-		"execa": "^1.0.0",
-		"import-fresh": "^3.0.0",
+		"ava": "^2.2.0",
+		"coveralls": "^3.0.5",
+		"execa": "^2.0.3",
+		"import-fresh": "^3.1.0",
 		"matcha": "^0.7.0",
-		"nyc": "^14.0.0",
+		"nyc": "^14.1.1",
 		"resolve-from": "^5.0.0",
-		"tsd": "^0.7.2",
+		"tsd": "^0.7.4",
 		"xo": "^0.24.0"
 	}
 }
diff --git a/readme.md b/readme.md
index d99b712..ede4ee1 100644
--- a/readme.md
+++ b/readme.md
@@ -13,6 +13,8 @@
 
 <img src="https://cdn.jsdelivr.net/gh/chalk/ansi-styles@8261697c95bf34b6c7767e2cbe9941a851d59385/screenshot.svg" width="900">
 
+**This readme reflects the next major version that is currently in development. You probably want [the v2 readme](https://www.npmjs.com/package/chalk).**
+
 
 ## Highlights
 
@@ -180,7 +182,7 @@ Explicit 256/Truecolor mode can be enabled using the `--color=256` and `--color=
 - `magenta`
 - `cyan`
 - `white`
-- `gray` ("bright black")
+- `blackBright` (alias: `gray`, `grey`)
 - `redBright`
 - `greenBright`
 - `yellowBright`
@@ -199,7 +201,7 @@ Explicit 256/Truecolor mode can be enabled using the `--color=256` and `--color=
 - `bgMagenta`
 - `bgCyan`
 - `bgWhite`
-- `bgBlackBright`
+- `bgBlackBright` (alias: `bgGray`, `bgGrey`)
 - `bgRedBright`
 - `bgGreenBright`
 - `bgYellowBright`
diff --git a/source/index.js b/source/index.js
index 0519720..e8d47c2 100644
--- a/source/index.js
+++ b/source/index.js
@@ -193,10 +193,9 @@ const applyStyle = (self, string) => {
 		}
 	}
 
-	// We can move both next actions out of loop, because remaining actions in loop won't have any/visible effect on parts we add here
-	// Close the styling before a linebreak and reopen
-	// after next line to fix a bleed issue on macOS
-	// https://github.com/chalk/chalk/pull/92
+	// We can move both next actions out of loop, because remaining actions in loop won't have
+	// any/visible effect on parts we add here. Close the styling before a linebreak and reopen
+	// after next line to fix a bleed issue on macOS: https://github.com/chalk/chalk/pull/92
 	const lfIndex = string.indexOf('\n');
 	if (lfIndex !== -1) {
 		string = stringEncaseCRLFWithFirstIndex(string, closeAll, openAll, lfIndex);
diff --git a/source/util.js b/source/util.js
index aaf3d79..d617156 100644
--- a/source/util.js
+++ b/source/util.js
@@ -6,31 +6,31 @@ const stringReplaceAll = (string, substring, replacer) => {
 		return string;
 	}
 
-	const subLen = substring.length;
-	let end = 0;
-	let res = '';
+	const substringLength = substring.length;
+	let endIndex = 0;
+	let returnValue = '';
 	do {
-		res += string.substr(end, index - end) + replacer;
-		end = index + subLen;
-		index = string.indexOf(substring, end);
+		returnValue += string.substr(endIndex, index - endIndex) + replacer;
+		endIndex = index + substringLength;
+		index = string.indexOf(substring, endIndex);
 	} while (index !== -1);
 
-	res += string.substr(end);
-	return res;
+	returnValue += string.substr(endIndex);
+	return returnValue;
 };
 
 const stringEncaseCRLFWithFirstIndex = (string, prefix, postfix, index) => {
-	let end = 0;
-	let res = '';
+	let endIndex = 0;
+	let returnValue = '';
 	do {
 		const gotCR = string[index - 1] === '\r';
-		res += string.substr(end, (gotCR ? index - 1 : index) - end) + prefix + (gotCR ? '\r\n' : '\n') + postfix;
-		end = index + 1;
-		index = string.indexOf('\n', end);
+		returnValue += string.substr(endIndex, (gotCR ? index - 1 : index) - endIndex) + prefix + (gotCR ? '\r\n' : '\n') + postfix;
+		endIndex = index + 1;
+		index = string.indexOf('\n', endIndex);
 	} while (index !== -1);
 
-	res += string.substr(end);
-	return res;
+	returnValue += string.substr(endIndex);
+	return returnValue;
 };
 
 module.exports = {
diff --git a/test/chalk.js b/test/chalk.js
index 92091cb..008a128 100644
--- a/test/chalk.js
+++ b/test/chalk.js
@@ -101,3 +101,7 @@ test('don\'t emit RGB codes if level is 0', t => {
 	t.is(new chalk.Instance({level: 0}).hex('#FF0000')('hello'), 'hello');
 	t.is(new chalk.Instance({level: 0}).bgHex('#FF0000')('hello'), 'hello');
 });
+
+test('supports blackBright color', t => {
+	t.is(chalk.blackBright('foo'), '\u001B[90mfoo\u001B[39m');
+});
diff --git a/test/level.js b/test/level.js
index 36df016..bb6df47 100644
--- a/test/level.js
+++ b/test/level.js
@@ -40,5 +40,6 @@ test('propagate enable/disable changes from child colors', t => {
 });
 
 test('disable colors if they are not supported', async t => {
-	t.is(await execa.stdout('node', [path.join(__dirname, '_fixture')]), 'test');
+	const {stdout} = await execa.node(path.join(__dirname, '_fixture'));
+	t.is(stdout, 'test');
 });