<html><head><style>#p1 {background-color:rgba(255,0,0,0.3);}#p2 {background-color:rgba(0,255,0,0.3);}#p3 {background-color:rgba(0,0,255,0.3);}#p4 {background-color:rgba(192,192,192,0.3);}#p5 {background-color:rgba(255,255,0,0.3);}#p6 {background-color:rgba(255,0,255,0.3);}</style></head><body><p>带不透明度的 RGB 颜色：</p><p id="p1">红色</p><p id="p2">绿色</p><p id="p3">蓝色</p><p id="p4">灰色</p><p id="p5">黄色</p><p id="p6">樱桃色</p></body></html>