Mehran Mahmoudkhani

due to the recent issue the [#14](https://github.com/gauravk95/bubble-navigation/issues/14) I decided to add titleTextColor attribute. I also set colorActive as the titleTextColor value.

In my view, having completed round corners like a half-circle are much prettier than having a rectangle with a round corner. it is just for preview if you want

what if someone wanted to use float values?