Binsy brown like a mouse's arse

exp.

Heard in Waterford

Sarcastic/disdainful reply/remark to any question/comment regarding colour.

In use

Yer wan's new carpet is manky, tis binsy brown like a mouse's arse

Posh English

That lady's new carpet is thoroughly filthy, exhibiting a rather wretched rodent-coloured hue.