Thank you for your response.
You're right, I think "softer" and lower in saturation might be the more accurate descriptions. For example, the V1 maps are more saturated and closer to RTP in style.
At first, I just wanted to use a few tiles from you and use the rest in RTP. However, I found out that the artistic direction is a bit different for the two of them.
Also, I just switched to taller walking sprites, and I think they look much much better on your maps compared to RTP assets (the doors are too short, and etc).
I just bought like 10 packs from you guys. Keep up the great work! :)