With help of many here and bajaron, I was able to replace all brake pads, bleed brake lines which I’ve never done before. Brake pads and bleeding wasn’t bad but little daunting at first. bajaron's pads are an improvement for sure but i had to bother him few times with things i wasn't sure about. 
I wrapped the plain black plastic parts while I was at it.
Few pics of wrapped parts.

I wrapped the plain black plastic parts while I was at it.
Few pics of wrapped parts.