Isnt choosing your blog’s theme just like choosing your room’s wallpaper ?
The only thing different would be that in case of blog, the ‘undo’ expenses are almost zero.
How much a wallpaper (in case of your room) & theme (in case of your blog) can speak for you.. I suppose it can telll that person’s frame of mind at the moment, theme or wallpaper is more like a reflection of the your personality, your inclination towards life, the way you see things & the way you want them to be.
These are not random colours, they hold significance. Hmm, so here i go, atlast chose a theme, did some alterations & its done.