# Re: [NTG-context] ConText, TikZ and definecolor: undefined control sequence

```On 27/10/2010 19:18, Marius wrote:
```
```Hello,
I had the same problem, so I desided to define colors by hand.```
```
\definecolor [lightgray] [h=D3D3D3]

\usemodule[tikz]

\unprotect
\pgfu...@definecolor{black}{gray}{0}
\pgfu...@definecolor{gray}{gray}{0.5}
\pgfu...@definecolor{lightgray}{gray}{0.9}
\pgfu...@definecolor{white}{gray}{1}
\protect
```
```
```
Yes, this is what I've resorted to. But it would be nice to define things properly.
```
```
```If you want to fix script, you need to change line:

local cv = colors.value(attributes)

into

local cv = attributes.colors.values

Just guess, untested.
```
```
Nope, doesn't work. Using

local colors = colors or { }

```
gets me a little further, but then complains that 'value' is a nil value. I don't know enough Lua to fix this either. Strangely, it seems to work on some older MkIV versions of ConTeXt...
```
Michael.
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