theme-schemas: set color defaults (for better code completion)

src/vs/workbench/services/themes/common/colorThemeSchema.ts

@@ -122,7 +122,7 @@ export const tokenColorizationSettingSchema: IJSONSchema = {
 			type: 'string',
 			description: nls.localize('schema.token.foreground', 'Foreground color for the token.'),
 			format: 'color-hex',
-			defaultSnippets: [{ body: '${1:#FF0000}' }]
+			default: '#ff0000'
 		},
 		background: {
 			type: 'string',

src/vs/workbench/services/themes/electron-browser/workbenchThemeService.ts

@@ -584,8 +584,7 @@ function tokenGroupSettings(description: string) {
 		anyOf: [
 			{
 				type: 'string',
-				format: 'color-hex',
-				defaultSnippets: [{ body: '#FF0000' }]
+				format: 'color-hex'
 			},
 			colorThemeSchema.tokenColorizationSettingSchema
 		]