Affinity4D

Wow. That absolutely fixed it! Thank you so much 😀
I have no idea how it switched automatically tbh.  My guess would be that I use a laptop so I feel like when I opened Affinity I had a game or graphics heavy operation in the background so my NVIDIA card was working, and when I left the game and then opened Affinity it had switched back to integrated graphics which I don't think had ever been set up properly. (The Windows Photos app had a similar issue since I got the laptop 3 years ago, that I tried to fix at the time and then forgot about, but as Affinity showed stock photos and margin line colours accurately I didn't link the two - it also makes sense as it was on an ASUS specific profile and not sRGB).
I'm no expert but that may explain why sometimes Affinity work occasionally but mostly have this issue.
I've attached a screenshot of the colour management screen for your curiosity.
Again thank you so much (and thank you to Hangman for also helping).
 

Wow. That absolutely fixed it! Thank you so much 😀
I have no idea how it switched automatically tbh.  My guess would be that I use a laptop so I feel like when I opened Affinity I had a game or graphics heavy operation in the background so my NVIDIA card was working, and when I left the game and then opened Affinity it had switched back to integrated graphics which I don't think had ever been set up properly. (The Windows Photos app had a similar issue since I got the laptop 3 years ago, that I tried to fix at the time and then forgot about, but as Affinity showed stock photos and margin line colours accurately I didn't link the two - it also makes sense as it was on an ASUS specific profile and not sRGB).
I'm no expert but that may explain why sometimes Affinity work occasionally but mostly have this issue.
I've attached a screenshot of the colour management screen for your curiosity.
Again thank you so much (and thank you to Hangman for also helping).
 

Many thanks for the further files, screenshots & information provided - this is certainly appreciated!
I can confirm that your assets also appear correctly for me;

The behaviour you're describing usually indicates that the Affinity app is having trouble converting colours using your monitors colour profile - as this is used for displaying Assets, Swatches and images once added to the canvas.
I believe you're using Affinity on Windows, therefore can you please open Windows Run (Windows Key + R) then paste the following string and press OK:
colorcpl
In the window that opens, please select your monitor that Affinity is displayed on from the dropdown list to see the colour profile currently applied (you may need to tick 'User my settings for this device' in order to see the profile).
What is the profile listed here please?
If you change this to sRGB, matching my screenshot below, and then restart the Affinity app, do you now find these colours are displayed correctly?

Many thanks in advance

Hi @Affinity4D,
Many thanks for trying... I'm at a bit of a loss as to other possible causes...
Your Assets file opens as expected for me displaying in the original colours so I'm unsure what else to suggest but I'm sure @Dan C will have some insight into what else to try...
 

Hi @Affinity4D and welcome to the forums,
Which Colour Format are you using in the Document Setup Colour Tab? If Grey/8 or Grey/16 then you likely need to change this to RGB or CMYK depending on your document requirements...
With regards to the Assets Panel, if your assets are black, which I assume they are, you have the option to change the background for the Assets Panel by selecting 'Background' from the hamburger menu on the Assets Panel and selecting either 'Light' or 'Checkerboard'...
See if those changes help and let us know...