Hello good morning
Yes your tooth colour can be changed from yellow to white I need to see the condition or colour of your teeth and then I can tell you whether and which option will be suitable to you.
But let me clear one myth no toothpaste or amount of force during toothbrushing can change the colour of your teeth.
For keeping your teeth color white you can follow the bellow mentioned steps.
1. Do regular and proper toothbrushing with toothpaste.
2. Get regular teeth cleaning also known as scaling done by a dentist once in six months.
3. If you feel your teeth are still yellow you can ask your dentist for teeth whitening procedure.
4. And if you are not satisfied still you can choose to get venners done for your teeth.
If you still have doubts send a private msg or chat.
Take care warm regards