title: Kivy Python - wrong color using kivy.utils.rgba
body: <p>I try to convert my <em>hex number</em> which informs about a color using <em>kivy.utils.rgba</em> method but it converts to incorrect color.</p>
  
  <p>I mean, I created a sample view in <em>Inkspace</em> and took the code in <em>hexdecimal representation</em> from there and then inserted it into the code but the visible color in Inkspace editor is different than in the created application in Kivy. Does anyone know what could be the reason?</p>
  
  <pre><code>#:import utils kivy.utils
  &lt;FlatButton@ButtonBehavior+Label&gt;:
      font_size:  16
  &lt;SigninWindow&gt;:
      id:                 main_win
      orientation:        "vertical"
      spacing:            150
      space_x:            self.size[0]/3
      canvas.before:
          Color:
              rgba:       utils.rgba('17b61738')
          Rectangle:
              size:       self.size
              pos:        self.pos
      BoxLayout:
          size_hint_y:    None
          height:         50
          canvas.before:
              Color:
                  rgba:       (.06,.45,.45,1)
              Rectangle:
                  size:       self.size
                  pos:        self.pos
          Label:
              text:           "Nazwa aplikacji"
              bold:           True
              size_hint_x:    .9
          FlatButton:
              text:           "x"
              size_hint_x:    .1
      BoxLayout:
          orientation:        "vertical"
          padding:            main_win.space_x, 10
          spacing:           
          BoxLayout:
              orientation:    "vertical"
              spacing:        10
              size_hint_y:    None
              height:         100
              Label:
                  id:                 info
                  text:               ''
                  markup:             True
                  size_hint_y:        None
                  height:             20
              TextInput:
                  id:                 username_field
                  hint_text:          "Username"
                  multiline:          False
                  focus:              True
                  on_text_validate:   pwd_field.focus = True
              TextInput:
                  id:                 pwd_field
                  hint_text:          "Password"
                  multiline:          False
                  password:           True
                  on_text_validate:   root.validate_user()
          Label:
              id:             sp
              size_hint_y:    None
              height:         40
          Button:
              text:               "Sign In"
              size_hint_y:        None
              height:             40
              background_color:   (.06, .45, .45, 1)
              background_normal:  ''
              on_release:         root.validate_user()
          Label:
              id:     sp2
  </code></pre>