@sarvagya:
Hi. It seems you've been working on being colour neutral very well. Good job.
People have different ways of improving. What I'll be saying in this post may not be how you like to improve.
Now, please don't take it as discouragement, but honestly, being colour neutral won't help you very much at this stage. Think about it: are you equally comfortable with all bases?
Perfectly equally? Perhaps not. If you were, I'm sure your times wouldn't have varied by such great amounts.
If you work on being colour neutral at this stage, your recognition improvement will be considerably slower. Since recognition is the main thing in CFOP (and most other methods), your all-round improvement will take place at a slower rate.
Instead, if you choose one colour and stick to it, you'll improve considerably faster... Which means you'll reach sub-10 faster as well. Now, what happens when you reach sub-10? That's when colour neutrality comes in! When you're sub-10, being colour neutral will be a major boost. Perhaps the amount of boost you'll receive will be the same even if you work on being colour neural right now. But, it will be relatively lower. Think of this example:
Let's assume that you receive a boost of 2-3 seconds by being colour neutral. If you average around 25 seconds, a 2-3 second boost won't help you that much, will it? Now, let's assume you are sub-10 and you average around 8-9 seconds. Now imagine how much of an advantage it will be if you're colour neutral.
At the end, however, it's your own decision. As I've already said above, people have different ways of improving. Honestly, I do not mean to discourage you. If you feel that being colour neutral is better for you, it is. All of this is just a suggestion. I am in no way forcing all of this upon you.
All right, then. Good luck and happy cubing.
