Lill Chaffe

I know this is me being dumb but I can not figure it out so any advice or help would be wonderful... I have a little sl house on the mainland looking at the sea. In the past it always looked like water and just this week it turned to a bright changing slightly trippy mosaic of technicolour. Everything else in sl looks normal. Please can anyone advise which of the many setting might help me turn it back to water looking please? Thank you thank you Vanilla and Lindal, you were both right it was the way to fix it. It turned out it had changed itself when I was playing with makeup appliers on a mesh head. I never even thought makeup would change the sea; SL is magical! Thank you so much for helping me : )