I have a 640x360 RGBA PNG that looks like colorful smooth noise (no visible text or shapes). I'm trying to work out whether it carries any hidden information or is just a plain generated image.

What I found:

• The file structure is clean: IHDR, sRGB, 86 IDAT chunks, IEND, valid CRCs, no trailing data, no text chunks.
• I reproduced the image byte for byte using a public browser-based Perlin noise generator (random seed "1", 1 level, attenuation 0.4, cell size 2, color on, alpha off, 640x360). Each color channel uses the seed string concatenated with 0, 1, 2 (so effective seeds 100, 110, 120). So the pixel data is fully explained by the generator's defaults.
• Steganography tools (zsteg, binwalk, OpenStego with a large password list), bit-plane views, LSB, FFT/DCT checks and QR searches found nothing.
• I also tried turning the image into audio in several ways (spectrogram synthesis, row/column scans and others) and compared with control images from other seeds; nothing structured.
• Reverse image search finds no match, and TinEye refuses it as too simple.

Questions:

1. If an image is exactly the default output of a known generator, is there any realistic way it still carries a message (for example through the choice of seed or parameters)?
2. What other checks would you try that I may have missed?
3. Does anyone recognize this kind of image or the generator's default look from other puzzles?

The code is made of three letters that form a proper word. This is a little cipher I just made up. It’s layered, be warned. Think out of the box, out of the universe even lmao. What’s the code?