The contrast between the white background and the dark edges is a significant factor. If you can't change the colours themselves, try setting a radial transparency gradient on each thumbnail which fades towards complete transparancy at the edge instead of having a hard edge. See this page on gradients in css for ideas on how to achieve this effect.
If you don't want to get into such complexity, then this trick seems to work:
The contrast between the white background and the dark edges is a significant factor. If you can't change the colours themselves, try setting a radial transparency gradient on each thumbnail which fades towards complete transparancy at the edge instead of having a hard edge. See this page on gradients in css for ideas on how to achieve this effect.
If you don't want to get into such complexity, then this trick seems to work:
The contrast between the white background and the dark edges is a significant factor. If you can't change the colours themselves, try setting a radial transparency gradient on each thumbnail which fades towards complete transparancy at the edge instead of having a hard edge. See this page on gradients in css for ideas on how to achieve this effect.
The contrast between the white background and the dark edges is a significant factor. If you can't change the colours themselves, try setting a radial transparency gradient on each thumbnail which fades towards complete transparancy at the edge instead of having a hard edge. See this page on gradients in css for ideas on how to achieve this effect.
Edited to remove the image discussed in the comments below, as it was just an afterthought and distracting from my real answer. If you don't want to get into such complexity, then this trick seems to work:
The contrast between the white background and the dark edges is a significant factor. If you can't change the colours themselves, try setting a radial transparency gradient on each thumbnail which fades towards complete transparancy at the edge instead of having a hard edge. See this page on gradients in css for ideas on how to achieve this effect.
Edited to remove the image discussed in the comments below, as it was just an afterthought and distracting from my real answer.
The contrast between the white background and the dark edges is a significant factor. If you can't change the colours themselves, try setting a radial transparency gradient on each thumbnail which fades towards complete transparancy at the edge instead of having a hard edge. See this page on gradients in css for ideas on how to achieve this effect.
If you don't want to get into such complexity, then this trick seems to work:
The contrast between the white background and the dark edges is a significant factor. If you can't change the colours themselves, try setting a radial transparency gradient on each thumbnail which fades towards complete transparancy at the edge instead of having a hard edge. See this page on gradients in css for ideas on how to achieve this effect.
If you don't want to get into such complexity, then this trick seems to work:
Edited to remove the image discussed in the comments below, as it was just an afterthought and distracting from my real answer.
The contrast between the white background and the dark edges is a significant factor. If you can't change the colours themselves, try setting a radial transparency gradient on each thumbnail which fades towards complete transparancy at the edge instead of having a hard edge. See this page on gradients in css for ideas on how to achieve this effect.
If you don't want to get into such complexity, then this trick seems to work:
The contrast between the white background and the dark edges is a significant factor. If you can't change the colours themselves, try setting a radial transparency gradient on each thumbnail which fades towards complete transparancy at the edge instead of having a hard edge. See this page on gradients in css for ideas on how to achieve this effect.
Edited to remove the image discussed in the comments below, as it was just an afterthought and distracting from my real answer.
