1. Removed logic to blend selection with background with 0.3 opacity from ColorManager to a function in color namespace.

2. Changed the DomRenderer and CanvasRenderer where the function defined in color namespace is called.

src/browser/renderer/Renderer.ts

@@ -15,6 +15,7 @@ import { ICharSizeService, ICoreBrowserService } from 'browser/services/Services
 import { IBufferService, IOptionsService, ICoreService } from 'common/services/Services';
 import { removeTerminalFromCache } from 'browser/renderer/atlas/CharAtlasCache';
 import { EventEmitter, IEvent } from 'common/EventEmitter';
+import { color } from 'browser/Color';
 
 let nextRendererId = 1;
 
@@ -44,7 +45,7 @@ export class Renderer extends Disposable implements IRenderer {
     super();
     const allowTransparency = this._optionsService.options.allowTransparency;
     this._characterJoinerRegistry = new CharacterJoinerRegistry(this._bufferService);
-
+    color.blendSelectionWithBgWithOpacity(this._colors);
     this._renderLayers = [
       new TextRenderLayer(this._screenElement, 0, this._colors, this._characterJoinerRegistry, allowTransparency, this._id, this._bufferService, _optionsService),
       new SelectionRenderLayer(this._screenElement, 1, this._colors, this._id, this._bufferService, _optionsService),
@@ -87,7 +88,6 @@ export class Renderer extends Disposable implements IRenderer {
 
   public setColors(colors: IColorSet): void {
     this._colors = colors;
-
     // Clear layers and force a full render
     this._renderLayers.forEach(l => {
       l.setColors(this._colors);

src/browser/renderer/dom/DomRenderer.ts

@@ -53,7 +53,7 @@ export class DomRenderer extends Disposable implements IRenderer {
     @IBufferService private readonly _bufferService: IBufferService
   ) {
     super();
-
+    color.blendSelectionWithBgWithOpacity(this._colors);
     this._rowContainer = document.createElement('div');
     this._rowContainer.classList.add(ROW_CONTAINER_CLASS);
     this._rowContainer.style.lineHeight = 'normal';