Hello, yes you can resize a 32x32 pixel image to 128x128px using the Nearest algorithm (Use Resize to side node) to get a higher resolution image that still looks like it has 32x32 pixels.
There are 2 ways to reduce the number of colors:
- Define your own custom color palette with fixed colors
- Use the Kmeans node to reduce colors, where you can specify the exact number of colors you want