Changing logo in kibana 4.5.0 windows (chrome)

I am trying to change kibana logo as per Change Kibana 4.2 logo. Its changing the image. But not looking good (Changed the colour, Bareley to seen). For reference

And the actual image is

For any kind of help Thanks in advance

It looks some of the styles will have to be updated in addition to the image. I can see the image's dimensions are different from the 4.5 logo for example. Inline styles are can be found at https://github.com/elastic/kibana/blob/e19395b7822897a0d18566940e463b2a4fb32e78/src/plugins/kibana/public/kibana.js#L25 and the stylesheet styles are at https://github.com/elastic/kibana/blob/e19395b7822897a0d18566940e463b2a4fb32e78/src/ui/public/styles/theme.less#L42

Thanks for the reply. By using this link I changed my png image to svg format with 252*45 dimesions. http://image.online-convert.com/convert-to-svg. After converting the sizes also its looking same as I mentioned above. And the lines you mentioned please mention What I have to change there. I dont know java

If you open the svg separately are the colors correct? Can you try using the png logo instead of the svg and see if that displays correctly?

Sorry, My svg colours are changed totally. I used a website to convert my jpeg to png while converting the background and the colours are totally changed. Now I fixed it & working fine. Thanks for reply