Color me purple

unnamed, unknown artist, 15" x 20", watercolor on paper

I thought this would be an easy one since the artist seems to have been fairly accomplished, though his/her color choices are a bit wacky. I found this in a thrift shop in Urbana/Champaign, Il. It was rusticly framed and had a dark green mat. Once I took a closer look at the signature, though, I realized that the third letter seems to be stylized and might represent two letters, possibly,IH, HI, LH, HL, etc. Not so easy after all! Help me!

Signature