从颜色中删除alpha但保留其纹理

let color = [100, 150, 200, 0.5];  // RGBA color with alpha
color[3] = 1;  // Remove alpha but keep the texture

div {
  background-color: rgba(100, 150, 200, 0.5);  /* Color with alpha */
}

/* Remove alpha but keep the texture */
div {
  background-color: rgb(100, 150, 200);
}