Should I pay for a premium theme?

Surprisingly, I am not tired yet of my three blogs’ identical themes. I’m so loving WP Premium because the total appearance is clean and simple, it’s very easy to organize the sidebar and most importantly, tweaking its template doesn’t require professional knowledge about php, html and java script. It’s such an amazing thing that the creator has provided a short instruction on how to modify the tags for each part of the blog. The only problem I see is that the available colors for the free version is too limited. Only red, black and brown. I got red for Penned by Sterndal and black for Manila Street which seems appropriate. But I’m just not satisfied with brown for The Starlit Sky and I can’t update my blog as often as I want if I am bothered with something. My initial plan was to immediately change its layout as soon as find a suitable theme which I thought will take only a few days. I thought it’s gonna be easy to find something white with a little shade of blue, seo optimized, widget-ready, advertisement-ready and basically just something plain and neat-looking. I don’t like anything complicated so choosing templates that still need customization is never an option. I’ve seen a lot of elegant magazine themes in the web but they are not cheaply priced :-( Purchasing the license will cost me around 100 dollars and HELLO! That’s 5000 pesos when converted to my country’s currency, that’s worth more than my annual web host plan, and well, that’s worth a shopping spree at Divisoria Mall! Waah! I really don’t think I can spend a big amount of money for my blog’s beautification. NOT NOW. Maybe in the near future but not now.