GDI+ Coloring Problem

[XeroCode]

I am working with GDI+ using its colormap constructor, problem is when GDI pulls in the image to recolor its doing it backwards. The images I pull in are .PNG line art images and the actual line art is black, however when i try to replace the black lines with say, green, my script colors the background not the actual line art! Heres my code:

 

<%@Page Language="vb" debug="true"%>

<%@import NameSpace = "System.Drawing"%>

<%@import NameSpace = "System.Drawing.Graphics"%>

<%@import NameSpace = "System.Drawing.Text"%>

<%@import NameSpace = "System.Drawing.Imaging"%>

<%@import NameSpace = "System.Drawing.Drawing2D"%>

<%

 

Response.Clear()

 

Dim strImgPath as String = "../images/clipart/xero.png"

Dim orgImage As System.Drawing.Image = System.Drawing.Image.FromFile(server.mappath(strImgPath))

Dim swpImage as New Bitmap(orgImage)

Dim g as Graphics = Graphics.FromImage(swpImage)

Dim clrMap(0) As System.Drawing.Imaging.ColorMap

 

 

clrMap(0) = new System.Drawing.Imaging.ColorMap()

clrMap(0).OldColor = color.black

clrMap(0).NewColor = Color.green

Dim attr As ImageAttributes = New ImageAttributes()

attr.SetRemapTable(clrMap)

 

Dim rec as New Rectangle(0,0,swpImage.width, swpImage.height)

g.drawImage(swpImage, rec,0,0,swpImage.Width, swpImage.Height, GraphicsUnit.Pixel, attr)

 

swpImage.Save(Response.OutputStream, ImageFormat.gif)

 

%>

 

The extra namespaces are in there for code that I have to add later. Any help with this would be greatly appreciated.

[XeroCode]

Ok, the code above is perfectly clean, the problem that I discovered is that GDI+ understands color.black as the HEX value #000000, is there anyway for me to set it up that GDI would look for all values resembeling the color black? For instance, #242727.

 

Also, is there anyway to set the .newColor dynamically, for instance, connecting to a Database, grabing the appropriate HEX value and input it into the .NewColor?

 

Maybe using ColorTranslator.FromHTML() ?

 

Thanks in advance