All Theme Icons not visible, can only use 'My Status' plain text link

Forgot to mention:-
OS: Windows 7 Ultimate ; Browser: Chrome Version 34.0.1847.116, IE: 11
All Windows 7 Updates applied.
Skype version: 6.14.0.104
General Settings:
Show me as Away when I’ve been inactive for ‘0’ minutes, unchecked
Privacy:
Calls, Video and IMS, allow anyone checked
Allow my online status to be shown on the Web, checked
Accept Skype browser cookies, checked
Allow Microsoft targeted ads….., unchecked
Advanced:
Use Skype to call callto: links on the Web, checked
Use Skype to call tel: links on the Web, checked

I’m seeing a small Skype icon on your site. If you are not, then try clearing the browser cache…

Thanks for your reply RavanH.
I have cleared both browsers cache (using CCleaner and manually).
I still only see a small transparent icon outline, like a place-marker. No colour. When I hover my mouse over the outline, sure enough the text status is there and is correct. But no visible coloured icon. The same for any theme I choose and for both browsers. My friends also see only the icon place-marker, no colour.
Any further ideas please, I would really like to get this right.
Cheers.

Hi RavanH,
Problem resolved. This is my fault entirely as I broke my own rules to turn off all add-blocking programs/extensions when testing new plugins.
I use a blocker called “Ghostery” which was blocking the icons that were passed by Skype. I have now whitelisted my own site. As my friends also have “Ghostery” I have recommended they do the same.
All icons are now working and correct.

My apologies to you, but thank you for your help which got me on the right track to finally realise my error.

Hi Silverfish, thanks for sharing your experience!