As a kid, I used Eosin for tissue staining. It is also fluorescent.

From the link below, you will see you can also use

Acridin Orange

Hoechst stains

Nile Red and so on...

http://en.wikipedia.org/wiki/Staining

Thank you all for the suggestions

I need to stain muscle and gut mainly, but it has to be the tissue itself not the vasculature.

I will check out the eosin staining at first.

If it doesn't work, the nucleic acid stains may solve my problem.