XF 2.2 How to change to background color of just the cookie notice?

[Cannabis Ape]

I can do it with the following code but surely there is a shorter one or an easier way

.XenBase .notice.notice--accent, .XenBase .notice.notice--enablePush, .XenBase .notice.notice--cookie {
    background: #b01623;}

 

[l3ta]

.XenBase .notice.notice--cookie {background: yellow;}