iconbutton.kv

<RoundedRect>:
	line_width: (self.height * 0.15) + 1
	radius: self.height * 0.007
    canvas:
        Color: 
        	rgb: self.rect_color
        Line:
            rounded_rectangle: (self.x + (self.line_width), self.y + (self.line_width), self.right - self.x - self.line_width * 2, self.top - self.y - self.line_width *2, self.radius)      
            width: self.line_width
        Rectangle:
            pos: (self.x + self.line_width, self.y + self.line_width) 
            size: (self.width - self. line_width*2, self.height - self.line_width * 2)

<TileIconButton>:
	RoundedRect:
		rect_color: root.tile_color
	BoxLayout:
		orientation: 'vertical'
	    Label:
	    	id: icon
            font_name: 'resource/fonts/fa.ttf'	    	
	    	color: root.icon_color
	    	size_hint_y: 0.7
	    	font_size: self.height * 0.7
	    	text: root.icon
	    Label:
	    	id: label
	    	font_name: root.title_font
	    	font_size: self.height * 0.4
	    	color: root.title_color
	    	size_hint_y: 0.3
	    	text: root.title	
            
<LabelIconButton>:
    RoundedRect:
        rect_color: root.tile_color
    BoxLayout:
        orientation: 'horizontal'
        padding: (dp(8), 0)
        spacing: dp(8)
        Label:
            id: icon
            size_hint_x: 0.25
            font_name: 'resource/fonts/fa.ttf'
            color: root.icon_color
            font_size: root.icon_size
            text: root.icon
        Label:
            id: label
            valign: 'middle'
            halign: 'left'
            text_size: (self.width, None)
            font_name: root.title_font
            font_size: root.title_font_size
            color: root.title_color
            size_hint_x: 0.75
            text: root.title    

<IconButton>:
    background_color: [0, 0, 0, 0]
    background_down: ''
    font_size: self.height
    
    color: [1.0, 1.0, 1.0, 0.8]
    font_name: 'resource/fonts/fa.ttf'